Pyrolytic synthesis and Eu3+→Eu2+ reduction process of blue-emitting perovskite-type BaLiF3:Eu thin films

Shinobu Fujihara, Yoko Kishiki, Toshio Kimura

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Perovskite-type barium lithium fluoride (BaLiF3) was synthesized by pyrolysis of metal trifluoroacetates. The reaction temperature necessary for producing a single-phase material was found to be 600°C, which was lower than that for a conventional solid-state reaction or a melting method. Eu-doped BaLiF3 was also prepared and characterized to examine the suitability of trifluoroacetates for precursors in synthesizing homogeneous complex metal fluoride materials. It was demonstrated that trivalent Eu3+, which was used as acetate for a starting material, was reduced to divalent Eu2+ in the pyrolysis process of BaLiF 3, as indicated by a broad blue emission due to an allowed 4f 65d→4f7 transition at 408nm with a ultraviolet excitation at 254nm. The concentration quenching of the blue emission occurred at 5at% of Eu in BaLiF3, indicating that Eu was homogeneously dispersed in the BaLiF3 host lattice. Mechanisms of the formation and reduction process of BaLiF3 were discussed based on pertinent chemical reactions.

Original languageEnglish
Pages (from-to)1032-1036
Number of pages5
JournalJournal of Solid State Chemistry
Volume177
Issue number3
DOIs
Publication statusPublished - 2004 Mar 1

Keywords

  • Barium lithium fluoride
  • Decomposition
  • Photoluminescence
  • Reduction
  • Trifluoroacetates

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Pyrolytic synthesis and Eu<sup>3+</sup>→Eu<sup>2+</sup> reduction process of blue-emitting perovskite-type BaLiF<sub>3</sub>:Eu thin films'. Together they form a unique fingerprint.

  • Cite this